package org.bouncycastle.openpgp;
import org.bouncycastle.bcpg.BCPGInputStream;
import org.bouncycastle.bcpg.Packet;
import org.bouncycastle.bcpg.PacketTags;
import org.bouncycastle.bcpg.SignaturePacket;
import org.bouncycastle.bcpg.TrustPacket;
import org.bouncycastle.bcpg.UserAttributePacket;
import org.bouncycastle.bcpg.UserIDPacket;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
public abstract class PGPKeyRing
{
PGPKeyRing()
{
}
static BCPGInputStream wrap(InputStream in)
{
if (in instanceof BCPGInputStream)
{
return (BCPGInputStream)in;
}
return new BCPGInputStream(in);
}
static TrustPacket readOptionalTrustPacket(
BCPGInputStream pIn)
throws IOException
{
return (pIn.nextPacketTag() == PacketTags.TRUST)
? (TrustPacket) pIn.readPacket()
: null;
}
static List readSignaturesAndTrust(
BCPGInputStream pIn)
throws IOException
{
try
{
List sigList = new ArrayList();
while (pIn.nextPacketTag() == PacketTags.SIGNATURE)
{
SignaturePacket signaturePacket = (SignaturePacket)pIn.readPacket();
TrustPacket trustPacket = readOptionalTrustPacket(pIn);
sigList.add(new PGPSignature(signaturePacket, trustPacket));
}
return sigList;
}
catch (PGPException e)
{
throw new IOException("can't create signature object: " + e.getMessage()
+ ", cause: " + e.getUnderlyingException().toString());
}
}
static void readUserIDs(
BCPGInputStream pIn,
List ids,
List idTrusts,
List idSigs)
throws IOException
{
while (pIn.nextPacketTag() == PacketTags.USER_ID
|| pIn.nextPacketTag() == PacketTags.USER_ATTRIBUTE)
{
Packet obj = pIn.readPacket();
if (obj instanceof UserIDPacket)
{
UserIDPacket id = (UserIDPacket)obj;
ids.add(id.getID());
}
else
{
UserAttributePacket user = (UserAttributePacket)obj;
ids.add(new PGPUserAttributeSubpacketVector(user.getSubpackets()));
}
idTrusts.add(readOptionalTrustPacket(pIn));
idSigs.add(readSignaturesAndTrust(pIn));
}
}
}